Abstract
BackgroundThis study aimed to evaluate the survival rate of glass hybrid restorations placed under the atraumatic restorative treatment (ART) technique in first permanent molars affected by molar incisor hypomineralization (MIH).MethodsSixty teeth with severe MIH associated to carious dentin lesions without pulp involvement were included. Treatments were performed by one trained dentist using the ART approach and restored with a glass hybrid restorative system (Equia Forte, GC®) on school premises. Treatments were evaluated after 6 and 12 months by an independent examiner using the modified ART criterion. Data analysis involved descriptive statistics and actuarial success analysis.ResultsThe sample comprised 24 (54.54%) girls and 20 (45.45%) boys with a mean age of 10.55 (±1.25) years. In regard to the number of surfaces involved in the restorations, 29 (48.3%) comprised one surface and 31 (51.7%) two or more surfaces. Considering cavity extent, 25 (41%) presented dentin cavitation without cusp weakness, 23 (37.7%) with large dentin cavitation with cusp weakness and 13 (21.3%) with large dentin cavitation with the breakdown of one or more cusps. Only 4 teeth required local anesthesia. A success rate of 98.3% after 6 and 12 months was observed, as only one restoration failed. The only failure occurred in a restoration involving three or more sur-faces presenting the breakdown of all cusps.ConclusionRestorations using a glass hybrid restorative system and performed in the field with the ART technique proved, after 12 months of evaluation, to be an effective approach to preserving first permanent molars affected by MIH.Trial registrationREBEC-RBR-8drccq (17/06/15).
Highlights
This study aimed to evaluate the survival rate of glass hybrid restorations placed under the atraumatic restorative treatment (ART) technique in first permanent molars affected by molar incisor hypomineralization (MIH)
The objective of this paper was to evaluate the survival rate of restorations performed using a new glass hybrid restorative system placed according to the atraumatic restorative treatment (ART) technique in first permanent molars affected by MIH
Study population The sample was composed of children aged 7 to 13 years, who were selected from a previous epidemiological survey of 1963 children from Paranoá, an underserved community located about 30 km from Brasilia, the capital of Brazil
Summary
This study aimed to evaluate the survival rate of glass hybrid restorations placed under the atraumatic restorative treatment (ART) technique in first permanent molars affected by molar incisor hypomineralization (MIH). Molar incisor hypomineralization (MIH) is a relatively common condition, with its prevalence varying from 20% to 40% depending on the population studied [1, 2]. MIH is defined as a developmental defect of the enamel of systemic origin that is observed in at least one of the first permanent molars, sometimes affecting the permanent incisors [5]. The lesions are characterized by demarcated opacities varying from white to a yellow/brown color surrounded by sound enamel [7]. Because of masticatory forces, posteruptive breakdown of the affected enamel
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